src/com/owncloud/android/ui/preview/PreviewImageFragment.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012-2014 ownCloud Inc.
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License version 2,
   6  *   as published by the Free Software Foundation.
   7  *
   8  *   This program is distributed in the hope that it will be useful,
   9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *   GNU General Public License for more details.
  12  *
  13  *   You should have received a copy of the GNU General Public License
  14  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  *
  16  */
  17 package com.owncloud.android.ui.preview;
  18
  19 import java.lang.ref.WeakReference;
  20 import java.util.ArrayList;
  21 import java.util.List;
  22
  23
  24 import android.accounts.Account;
  25 import android.annotation.SuppressLint;
  26 import android.app.Activity;
  27 import android.content.ActivityNotFoundException;
  28 import android.content.Intent;
  29 import android.graphics.Bitmap;
  30 import android.graphics.BitmapFactory;
  31 import android.graphics.BitmapFactory.Options;
  32 import android.graphics.Point;
  33 import android.net.Uri;
  34 import android.os.AsyncTask;
  35 import android.os.Bundle;
  36 import android.os.Handler;
  37 import android.support.v4.app.FragmentStatePagerAdapter;
  38 import android.view.Display;
  39 import android.view.LayoutInflater;
  40 import android.view.View;
  41 import android.view.View.OnTouchListener;
  42 import android.view.ViewGroup;
  43 import android.webkit.MimeTypeMap;
  44 import android.widget.ImageView;
  45 import android.widget.ProgressBar;
  46 import android.widget.TextView;
  47 import android.widget.Toast;
  48
  49 import com.actionbarsherlock.view.Menu;
  50 import com.actionbarsherlock.view.MenuInflater;
  51 import com.actionbarsherlock.view.MenuItem;
  52 import com.owncloud.android.R;
  53 import com.owncloud.android.datamodel.FileDataStorageManager;
  54 import com.owncloud.android.datamodel.OCFile;
  55 import com.owncloud.android.lib.common.network.WebdavUtils;
  56 import com.owncloud.android.lib.common.operations.OnRemoteOperationListener;
  57 import com.owncloud.android.lib.common.operations.RemoteOperation;
  58 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  59 import com.owncloud.android.operations.RemoveFileOperation;
  60 import com.owncloud.android.ui.activity.FileActivity;
  61 import com.owncloud.android.ui.dialog.ConfirmationDialogFragment;
  62 import com.owncloud.android.ui.fragment.FileFragment;
  63 import com.owncloud.android.utils.Log_OC;
  64
  65
  66 /**
  67  * This fragment shows a preview of a downloaded image.
  68  *
  69  * Trying to get an instance with NULL {@link OCFile} or ownCloud {@link Account} values will produce an {@link IllegalStateException}.
  70  *
  71  * If the {@link OCFile} passed is not downloaded, an {@link IllegalStateException} is generated on instantiation too.
  72  *
  73  * @author David A. Velasco
  74  */
  75 public class PreviewImageFragment extends FileFragment implements   OnRemoteOperationListener,
  76                                                                         ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
  77     public static final String EXTRA_FILE = "FILE";
  78     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  79
  80     private View mView;
  81     private Account mAccount;
  82     private ImageView mImageView;
  83     private TextView mMessageView;
  84     private ProgressBar mProgressWheel;
  85
  86     public Bitmap mBitmap = null;
  87
  88     private Handler mHandler;
  89     private RemoteOperation mLastRemoteOperation;
  90
  91     private static final String TAG = PreviewImageFragment.class.getSimpleName();
  92
  93     private boolean mIgnoreFirstSavedState;
  94
  95
  96     /**
  97      * Creates a fragment to preview an image.
  98      *
  99      * When 'imageFile' or 'ocAccount' are null
 100      *
 101      * @param imageFile                 An {@link OCFile} to preview as an image in the fragment
 102      * @param ocAccount                 An ownCloud account; needed to start downloads
 103      * @param ignoreFirstSavedState     Flag to work around an unexpected behaviour of {@link FragmentStatePagerAdapter}; TODO better solution
 104      */
 105     public PreviewImageFragment(OCFile fileToDetail, Account ocAccount, boolean ignoreFirstSavedState) {
 106         super(fileToDetail);
 107         mAccount = ocAccount;
 108         mIgnoreFirstSavedState = ignoreFirstSavedState;
 109     }
 110
 111
 112     /**
 113      *  Creates an empty fragment for image previews.
 114      *
 115      *  MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically (for instance, when the device is turned a aside).
 116      *
 117      *  DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful construction
 118      */
 119     public PreviewImageFragment() {
 120         super();
 121         mAccount = null;
 122         mIgnoreFirstSavedState = false;
 123     }
 124
 125
 126     /**
 127      * {@inheritDoc}
 128      */
 129     @Override
 130     public void onCreate(Bundle savedInstanceState) {
 131         super.onCreate(savedInstanceState);
 132         mHandler = new Handler();
 133         setHasOptionsMenu(true);
 134     }
 135
 136
 137     /**
 138      * {@inheritDoc}
 139      */
 140     @Override
 141     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 142             Bundle savedInstanceState) {
 143         super.onCreateView(inflater, container, savedInstanceState);
 144         mView = inflater.inflate(R.layout.preview_image_fragment, container, false);
 145         mImageView = (ImageView)mView.findViewById(R.id.image);
 146         mImageView.setVisibility(View.GONE);
 147         mView.setOnTouchListener((OnTouchListener)getActivity());   // WATCH OUT THAT CAST
 148         mMessageView = (TextView)mView.findViewById(R.id.message);
 149         mMessageView.setVisibility(View.GONE);
 150         mProgressWheel = (ProgressBar)mView.findViewById(R.id.progressWheel);
 151         mProgressWheel.setVisibility(View.VISIBLE);
 152         return mView;
 153     }
 154
 155
 156     /**
 157      * {@inheritDoc}
 158      */
 159     @Override
 160     public void onAttach(Activity activity) {
 161         super.onAttach(activity);
 162         if (!(activity instanceof FileFragment.ContainerActivity))
 163             throw new ClassCastException(activity.toString() + " must implement " + FileFragment.ContainerActivity.class.getSimpleName());
 164     }
 165
 166
 167     /**
 168      * {@inheritDoc}
 169      */
 170     @Override
 171     public void onActivityCreated(Bundle savedInstanceState) {
 172         super.onActivityCreated(savedInstanceState);
 173         if (savedInstanceState != null) {
 174             if (!mIgnoreFirstSavedState) {
 175                 OCFile file = (OCFile)savedInstanceState.getParcelable(PreviewImageFragment.EXTRA_FILE);
 176                 setFile(file);
 177                 mAccount = savedInstanceState.getParcelable(PreviewImageFragment.EXTRA_ACCOUNT);
 178 // TODO remove this code: update file no needed
 179 //                // Update the file
 180 ////                if (mAccount!= null) {
 181 //                    OCFile updatedFile = ((FileActivity)getSherlockActivity()).
 182 //                            getStorageManager().getFileByPath(file.getRemotePath());
 183 //                    if (updatedFile != null) {
 184 //                        setFile(updatedFile);
 185 //                    } else {
 186 //                        setFile(file);
 187 //                    }
 188 //                } else {
 189 //                    setFile(file);
 190 //                }
 191
 192             } else {
 193                 mIgnoreFirstSavedState = false;
 194             }
 195         }
 196         if (getFile() == null) {
 197             throw new IllegalStateException("Instanced with a NULL OCFile");
 198         }
 199         if (mAccount == null) {
 200             throw new IllegalStateException("Instanced with a NULL ownCloud Account");
 201         }
 202         if (!getFile().isDown()) {
 203             throw new IllegalStateException("There is no local file to preview");
 204         }
 205     }
 206
 207
 208     /**
 209      * {@inheritDoc}
 210      */
 211     @Override
 212     public void onSaveInstanceState(Bundle outState) {
 213         super.onSaveInstanceState(outState);
 214         outState.putParcelable(PreviewImageFragment.EXTRA_FILE, getFile());
 215         outState.putParcelable(PreviewImageFragment.EXTRA_ACCOUNT, mAccount);
 216     }
 217
 218
 219     @Override
 220     public void onStart() {
 221         super.onStart();
 222         if (getFile() != null) {
 223            BitmapLoader bl = new BitmapLoader(mImageView, mMessageView, mProgressWheel);
 224            bl.execute(new String[]{getFile().getStoragePath()});
 225         }
 226     }
 227
 228
 229     /**
 230      * {@inheritDoc}
 231      */
 232     @Override
 233     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 234         super.onCreateOptionsMenu(menu, inflater);
 235
 236         inflater.inflate(R.menu.file_actions_menu, menu);
 237         List<Integer> toHide = new ArrayList<Integer>();
 238
 239         MenuItem item = null;
 240         toHide.add(R.id.action_cancel_download);
 241         toHide.add(R.id.action_cancel_upload);
 242         toHide.add(R.id.action_download_file);
 243         toHide.add(R.id.action_rename_file);    // by now
 244
 245         // Options shareLink
 246         if (!getFile().isShareByLink()) {
 247             toHide.add(R.id.action_unshare_file);
 248         }
 249
 250         // Send file
 251         boolean sendEnabled = getString(R.string.send_files_to_other_apps).equalsIgnoreCase("on");
 252         if (!sendEnabled) {
 253             toHide.add(R.id.action_send_file);
 254         }
 255
 256         for (int i : toHide) {
 257             item = menu.findItem(i);
 258             if (item != null) {
 259                 item.setVisible(false);
 260                 item.setEnabled(false);
 261             }
 262         }
 263
 264     }
 265
 266     /**
 267      * {@inheritDoc}
 268      */
 269     @Override
 270     public void onPrepareOptionsMenu(Menu menu) {
 271         super.onPrepareOptionsMenu(menu);
 272
 273         MenuItem item = menu.findItem(R.id.action_unshare_file);
 274         // Options shareLink
 275         OCFile file = ((FileActivity) getSherlockActivity()).getFile();
 276         if (!file.isShareByLink()) {
 277             item.setVisible(false);
 278             item.setEnabled(false);
 279         } else {
 280             item.setVisible(true);
 281             item.setEnabled(true);
 282         }
 283
 284     }
 285
 286
 287
 288     /**
 289      * {@inheritDoc}
 290      */
 291     @Override
 292     public boolean onOptionsItemSelected(MenuItem item) {
 293         switch (item.getItemId()) {
 294             case R.id.action_share_file: {
 295                 FileActivity act = (FileActivity)getSherlockActivity();
 296                 act.getFileOperationsHelper().shareFileWithLink(getFile(), act);
 297                 return true;
 298             }
 299             case R.id.action_unshare_file: {
 300                 FileActivity act = (FileActivity)getSherlockActivity();
 301                 act.getFileOperationsHelper().unshareFileWithLink(getFile(), act);
 302                 return true;
 303             }
 304             case R.id.action_open_file_with: {
 305                 openFile();
 306                 return true;
 307             }
 308             case R.id.action_remove_file: {
 309                 removeFile();
 310                 return true;
 311             }
 312             case R.id.action_see_details: {
 313                 seeDetails();
 314                 return true;
 315             }
 316             case R.id.action_send_file: {
 317                 FileActivity act = (FileActivity)getSherlockActivity();
 318                 act.getFileOperationsHelper().sendDownloadedFile(getFile(), act);
 319                 return true;
 320             }
 321
 322             default:
 323                 return false;
 324         }
 325     }
 326
 327
 328     private void seeDetails() {
 329         ((FileFragment.ContainerActivity)getActivity()).showDetails(getFile());
 330     }
 331
 332
 333     @Override
 334     public void onResume() {
 335         super.onResume();
 336     }
 337
 338
 339     @Override
 340     public void onPause() {
 341         super.onPause();
 342     }
 343
 344
 345     @Override
 346     public void onDestroy() {
 347         super.onDestroy();
 348         if (mBitmap != null) {
 349             mBitmap.recycle();
 350         }
 351     }
 352
 353
 354     /**
 355      * Opens the previewed image with an external application.
 356      *
 357      * TODO - improve this; instead of prioritize the actions available for the MIME type in the server,
 358      * we should get a list of available apps for MIME tpye in the server and join it with the list of
 359      * available apps for the MIME type known from the file extension, to let the user choose
 360      */
 361     private void openFile() {
 362         OCFile file = getFile();
 363         String storagePath = file.getStoragePath();
 364         String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 365         try {
 366             Intent i = new Intent(Intent.ACTION_VIEW);
 367             i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), file.getMimetype());
 368             i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 369             startActivity(i);
 370
 371         } catch (Throwable t) {
 372             Log_OC.e(TAG, "Fail when trying to open with the mimeType provided from the ownCloud server: " + file.getMimetype());
 373             boolean toastIt = true;
 374             String mimeType = "";
 375             try {
 376                 Intent i = new Intent(Intent.ACTION_VIEW);
 377                 mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 378                 if (mimeType == null || !mimeType.equals(file.getMimetype())) {
 379                     if (mimeType != null) {
 380                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mimeType);
 381                     } else {
 382                         // desperate try
 383                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), "*-/*");
 384                     }
 385                     i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 386                     startActivity(i);
 387                     toastIt = false;
 388                 }
 389
 390             } catch (IndexOutOfBoundsException e) {
 391                 Log_OC.e(TAG, "Trying to find out MIME type of a file without extension: " + storagePath);
 392
 393             } catch (ActivityNotFoundException e) {
 394                 Log_OC.e(TAG, "No activity found to handle: " + storagePath + " with MIME type " + mimeType + " obtained from extension");
 395
 396             } catch (Throwable th) {
 397                 Log_OC.e(TAG, "Unexpected problem when opening: " + storagePath, th);
 398
 399             } finally {
 400                 if (toastIt) {
 401                     Toast.makeText(getActivity(), "There is no application to handle file " + file.getFileName(), Toast.LENGTH_SHORT).show();
 402                 }
 403             }
 404
 405         }
 406         finish();
 407     }
 408
 409
 410     /**
 411      * Starts a the removal of the previewed file.
 412      *
 413      * Shows a confirmation dialog. The action continues in {@link #onConfirmation(String)} , {@link #onNeutral(String)} or {@link #onCancel(String)},
 414      * depending upon the user selection in the dialog.
 415      */
 416     private void removeFile() {
 417         ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 418                 R.string.confirmation_remove_alert,
 419                 new String[]{getFile().getFileName()},
 420                 R.string.confirmation_remove_remote_and_local,
 421                 R.string.confirmation_remove_local,
 422                 R.string.common_cancel);
 423         confDialog.setOnConfirmationListener(this);
 424         confDialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 425     }
 426
 427
 428     /**
 429      * Performs the removal of the previewed file, both locally and in the server.
 430      */
 431     @Override
 432     public void onConfirmation(String callerTag) {
 433         FileDataStorageManager storageManager =
 434                 ((FileActivity)getSherlockActivity()).getStorageManager();
 435         if (storageManager.getFileById(getFile().getFileId()) != null) {   // check that the file is still there;
 436             mLastRemoteOperation = new RemoveFileOperation( getFile(),      // TODO we need to review the interface with RemoteOperations, and use OCFile IDs instead of OCFile objects as parameters
 437                                                             true,
 438                                                             storageManager);
 439             mLastRemoteOperation.execute(mAccount, getSherlockActivity(), this, mHandler, getSherlockActivity());
 440
 441             ((FileActivity) getActivity()).showLoadingDialog();
 442         }
 443     }
 444
 445
 446     /**
 447      * Removes the file from local storage
 448      */
 449     @Override
 450     public void onNeutral(String callerTag) {
 451         OCFile file = getFile();
 452         ((FileActivity)getSherlockActivity()).getStorageManager().removeFile(file, false, true);    // TODO perform in background task / new thread
 453         finish();
 454     }
 455
 456     /**
 457      * User cancelled the removal action.
 458      */
 459     @Override
 460     public void onCancel(String callerTag) {
 461         // nothing to do here
 462     }
 463
 464
 465     private class BitmapLoader extends AsyncTask<String, Void, Bitmap> {
 466
 467         /**
 468          * Weak reference to the target {@link ImageView} where the bitmap will be loaded into.
 469          *
 470          * Using a weak reference will avoid memory leaks if the target ImageView is retired from memory before the load finishes.
 471          */
 472         private final WeakReference<ImageView> mImageViewRef;
 473
 474         /**
 475          * Weak reference to the target {@link TextView} where error messages will be written.
 476          *
 477          * Using a weak reference will avoid memory leaks if the target ImageView is retired from memory before the load finishes.
 478          */
 479         private final WeakReference<TextView> mMessageViewRef;
 480
 481
 482         /**
 483          * Weak reference to the target {@link Progressbar} shown while the load is in progress.
 484          *
 485          * Using a weak reference will avoid memory leaks if the target ImageView is retired from memory before the load finishes.
 486          */
 487         private final WeakReference<ProgressBar> mProgressWheelRef;
 488
 489
 490         /**
 491          * Error message to show when a load fails
 492          */
 493         private int mErrorMessageId;
 494
 495
 496         /**
 497          * Constructor.
 498          *
 499          * @param imageView     Target {@link ImageView} where the bitmap will be loaded into.
 500          */
 501         public BitmapLoader(ImageView imageView, TextView messageView, ProgressBar progressWheel) {
 502             mImageViewRef = new WeakReference<ImageView>(imageView);
 503             mMessageViewRef = new WeakReference<TextView>(messageView);
 504             mProgressWheelRef = new WeakReference<ProgressBar>(progressWheel);
 505         }
 506
 507
 508         @SuppressWarnings("deprecation")
 509         @SuppressLint({ "NewApi", "NewApi", "NewApi" }) // to avoid Lint errors since Android SDK r20
 510                 @Override
 511         protected Bitmap doInBackground(String... params) {
 512             Bitmap result = null;
 513             if (params.length != 1) return result;
 514             String storagePath = params[0];
 515             try {
 516                 // set desired options that will affect the size of the bitmap
 517                 BitmapFactory.Options options = new Options();
 518                 options.inScaled = true;
 519                 options.inPurgeable = true;
 520                 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.GINGERBREAD_MR1) {
 521                     options.inPreferQualityOverSpeed = false;
 522                 }
 523                 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
 524                     options.inMutable = false;
 525                 }
 526                 // make a false load of the bitmap - just to be able to read outWidth, outHeight and outMimeType
 527                 options.inJustDecodeBounds = true;
 528                 BitmapFactory.decodeFile(storagePath, options);
 529
 530                 int width = options.outWidth;
 531                 int height = options.outHeight;
 532                 int scale = 1;
 533
 534                 Display display = getActivity().getWindowManager().getDefaultDisplay();
 535                 Point size = new Point();
 536                 int screenWidth;
 537                 int screenHeight;
 538                 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB_MR2) {
 539                     display.getSize(size);
 540                     screenWidth = size.x;
 541                     screenHeight = size.y;
 542                 } else {
 543                     screenWidth = display.getWidth();
 544                     screenHeight = display.getHeight();
 545                 }
 546
 547                 if (width > screenWidth) {
 548                     // second try to scale down the image , this time depending upon the screen size
 549                     scale = (int) Math.floor((float)width / screenWidth);
 550                 }
 551                 if (height > screenHeight) {
 552                     scale = Math.max(scale, (int) Math.floor((float)height / screenHeight));
 553                 }
 554                 options.inSampleSize = scale;
 555
 556                 // really load the bitmap
 557                 options.inJustDecodeBounds = false; // the next decodeFile call will be real
 558                 result = BitmapFactory.decodeFile(storagePath, options);
 559                 //Log_OC.d(TAG, "Image loaded - width: " + options.outWidth + ", loaded height: " + options.outHeight);
 560
 561                 if (result == null) {
 562                     mErrorMessageId = R.string.preview_image_error_unknown_format;
 563                     Log_OC.e(TAG, "File could not be loaded as a bitmap: " + storagePath);
 564                 }
 565
 566             } catch (OutOfMemoryError e) {
 567                 mErrorMessageId = R.string.preview_image_error_unknown_format;
 568                 Log_OC.e(TAG, "Out of memory occured for file " + storagePath, e);
 569
 570             } catch (NoSuchFieldError e) {
 571                 mErrorMessageId = R.string.common_error_unknown;
 572                 Log_OC.e(TAG, "Error from access to unexisting field despite protection; file " + storagePath, e);
 573
 574             } catch (Throwable t) {
 575                 mErrorMessageId = R.string.common_error_unknown;
 576                 Log_OC.e(TAG, "Unexpected error loading " + getFile().getStoragePath(), t);
 577
 578             }
 579             return result;
 580         }
 581
 582         @Override
 583         protected void onPostExecute(Bitmap result) {
 584             hideProgressWheel();
 585             if (result != null) {
 586                 showLoadedImage(result);
 587             } else {
 588                 showErrorMessage();
 589             }
 590         }
 591
 592         private void showLoadedImage(Bitmap result) {
 593             if (mImageViewRef != null) {
 594                 final ImageView imageView = mImageViewRef.get();
 595                 if (imageView != null) {
 596                     imageView.setImageBitmap(result);
 597                     imageView.setVisibility(View.VISIBLE);
 598                     mBitmap  = result;
 599                 } // else , silently finish, the fragment was destroyed
 600             }
 601             if (mMessageViewRef != null) {
 602                 final TextView messageView = mMessageViewRef.get();
 603                 if (messageView != null) {
 604                     messageView.setVisibility(View.GONE);
 605                 } // else , silently finish, the fragment was destroyed
 606             }
 607         }
 608
 609         private void showErrorMessage() {
 610             if (mImageViewRef != null) {
 611                 final ImageView imageView = mImageViewRef.get();
 612                 if (imageView != null) {
 613                     // shows the default error icon
 614                     imageView.setVisibility(View.VISIBLE);
 615                 } // else , silently finish, the fragment was destroyed
 616             }
 617             if (mMessageViewRef != null) {
 618                 final TextView messageView = mMessageViewRef.get();
 619                 if (messageView != null) {
 620                     messageView.setText(mErrorMessageId);
 621                     messageView.setVisibility(View.VISIBLE);
 622                 } // else , silently finish, the fragment was destroyed
 623             }
 624         }
 625
 626         private void hideProgressWheel() {
 627             if (mProgressWheelRef != null) {
 628                 final ProgressBar progressWheel = mProgressWheelRef.get();
 629                 if (progressWheel != null) {
 630                     progressWheel.setVisibility(View.GONE);
 631                 }
 632             }
 633         }
 634
 635     }
 636
 637     /**
 638      * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewImageFragment} to be previewed.
 639      *
 640      * @param file      File to test if can be previewed.
 641      * @return          'True' if the file can be handled by the fragment.
 642      */
 643     public static boolean canBePreviewed(OCFile file) {
 644         return (file != null && file.isImage());
 645     }
 646
 647
 648     /**
 649      * {@inheritDoc}
 650      */
 651     @Override
 652     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 653         if (operation.equals(mLastRemoteOperation) && operation instanceof RemoveFileOperation) {
 654             onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
 655         }
 656     }
 657
 658     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
 659         ((FileActivity) getActivity()).dismissLoadingDialog();
 660
 661         if (result.isSuccess()) {
 662             Toast msg = Toast.makeText(getActivity().getApplicationContext(), R.string.remove_success_msg, Toast.LENGTH_LONG);
 663             msg.show();
 664             finish();
 665
 666         } else {
 667             Toast msg = Toast.makeText(getActivity(), R.string.remove_fail_msg, Toast.LENGTH_LONG);
 668             msg.show();
 669             if (result.isSslRecoverableException()) {
 670                 // TODO show the SSL warning dialog
 671             }
 672         }
 673     }
 674
 675     /**
 676      * Finishes the preview
 677      */
 678     private void finish() {
 679         Activity container = getActivity();
 680         container.finish();
 681     }
 682
 683
 684 }